<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
</body>
<script>
    var dog ={
        dogName:"lily",
        weight:"20kg",
        color:"black",
        age:2,
        jump: function(){
            if (this.age>=2) {
                console.log(this.dogName +"can jump");
                
            }
        }
    }
    /*   定义一个cat对象，属性有名字、品种、体重  */
    </script>
</html>